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Common-mode choke

USB & power interfaces · 20 mH · 2 A

Common-mode line filter choke · 20 mH per winding · 2 A · 600 mΩ per winding · blocks noise that flows the same way in L and N, passes the mains current

Common-mode choke on the simulator's bench

Try it on the benchThe lab drops it on an empty bench and opens its datasheet card.

Pins

L in
L out
N in
N out

Lessons and builds that use it

65 W USB-C PD charger from scratch: mains flyback (UC3844, 800 V MOSFET, PQ2625 transformer), TL431 + PC817 feedback, PD controller (build)
Real device: phone charger, 220 V AC wall to 5 V USB (build)
Real device: laptop charger, 220 V AC wall to 20 V with PFC (build)

Common-mode choke

Pins

Lessons and builds that use it

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